3x + 7x = 1050(x - 63) + 15 = 2450x - 315 + 15 = 2450x - 300 = 2450x = 54x = 549 / 5x = 10.98
Ответ: x = 10.98
3x + 7x = 10
50(x - 63) + 15 = 24
50x - 315 + 15 = 24
50x - 300 = 24
50x = 54
x = 549 / 5
x = 10.98
Ответ: x = 10.98